text: import { mount, shallowMount, createLocalVue } from '@vue/test-utils'
  import Chart from '@/components/Chart'
  import Vue from 'vue'
  import Vuetify from 'vuetify'
  
  Vue.use(Vuetify)
  
  const localVue = createLocalVue()
  let vuetify
  let wrapper
  
  describe('Chart', () => {
      beforeEach(() => {
          vuetify = new Vuetify()
      })
  
      it('is instantiated', () => {
          wrapper = shallowMount(Chart, {
              localVue,
              vuetify,
              propsData: {
                  chartDataCollection: null,
                  city: 'Berlin',
              },
          })
          expect(wrapper).toBeTruthy()
      })
  
      afterEach(() => {
          wrapper.destroy()
      })
  })
  